题目内容
(2013•宿迁市)I heard Tom ________ when I walked past his room yesterday.
A. sing B. singing C. to sing D. sang
B 【解析】句意:昨天当我走过汤姆的房间时,我听见他正在唱歌。根据when I walked past his room yesterday.可知此处表示当时听见他正在唱歌,hear sb doing sth听见某人正在做某事,故选B。
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